Chain.doFilter在Filter.doFilter方法中做什么? [英] What is chain.doFilter doing in Filter.doFilter method?

问题描述

在 doFilter在doFilter内部做什么?这不是递归调用吗?

What is doFilter doing inside a doFilter? Isn't it a recursive call?

推荐答案

Servlet过滤器是责任链设计模式.

Servlet Filters are an implementation of the Chain of responsibility design pattern.

所有过滤器都已链接(按照其在web.xml中的定义顺序). chain.doFilter()进行到链中的下一个元素.链的最后一个元素是目标资源/servlet.

All filters are chained (in the order of their definition in web.xml). The chain.doFilter() is proceeding to the next element in the chain. The last element of the chain is the target resource/servlet.

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